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Øyvind Johnsen – MSc - (co-founder of MTC and owner)

Name:

Øyvind Johnsen

Mobil:

+47 90821068

Fax:

+47 66761531

email:

Oyvind.Johnsen@mtc.no

Past Employment:

1996 - present Marine Technology Consulting AS

Dalia TLP; Kværner internal study - Client: Kværner Oil and Gas / BP (1998). Deep water study of small wellhead TLP for West Africa. The use of risers without heave compenstion was studied as well as the interaction between riser/tether dynamics and TLP in a coupled model.

Umoe TLP - Client: Umoe Oil and Gas (1998). Performed hydrodynamic hull optimisation and tether sizing for a 4 column TLP. Performed tether fatigue analysis including the effects of springing (wave second order high frequency loading).

Workover Riser Analysis; Detail Engineering - Client: Seaflex / Kongsberg Offshore (1997/98). Performed riser analysis for operation in water depths ranging from 100 – 2000 m offshore Brazil. Standard drill pipe was used. The work included analysis of the different stages of installation-, operating- and disconnect conditions. Also performed fatigue analysis including vortex induced vibrations.

Terra Nova Semi and Ship; Conceptual Engineering (Calgary location) - Client: Petro Canada) (1988). Performed design and analysis of the station keeping system and the turret as well as motion response analysis. Performed dynamic (time domain) analysis of the flexible risers and a loading buoy.

Snorre TLP; Conceptual-, Pre- and Main Engineering - Client: Saga Petroleum (1986-1989). Performed extensive work on hull and tether optimisation and sizing in the conceptual phase. Sensitivity analyses were performed to verify effect of uncertainties and variations on global responses and tether loads. Performed tether design analyses in terms of extreme load- and stress and fatigue computations. In pre- and detail engineering, performed global motion response analyses as well as tether design analyses (as above). Interfaced with deck/hull/tether/foundation/component designers in terms of global responses and local wave/structure kinematics. Performed various temporary stage evaluations; deck mating, vessel towing to site, TLP installation (two vessel coupled analysis including DP).

During the Heidrun project, introduced a rational method for organising analytical models into libraries to enable safe administration of the models used by many people and to enable efficient execution of large amount s of analysis. The procedure is executed by means of Script files under UNIX or command files under VMS.

Involved in shaping of internal procedures for Software Quality Assurance.

Computer Systems Management:
VAX System Manager in Aker Engineering Oslo and responsible for purchasing, setting up and maintaining local area VAX clusters for :